LISUN goniophotometer for LED CIE C-γ test
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The CIE C- γ test is a technique for assessing the color performance of illumination sources in accordance with the criteria established by the International Commission on Illumination (CIE). It is also known as the CIE Color General Photometry Test. The test determines whether or not a light source is capable of rendering colors in the same way as the human eye does—that is, appropriately and accurately. The chromaticity coordinates of the light source that is being examined are compared to those of a reference light source that has a chromaticity that is already known. Examples of such reference light sources are a black body radiator and a daylight source. The color rendering index (CRI) of the light source may be determined by taking the difference between the two sets of chromaticity coordinates into consideration. The color rendering index, or CRI, is a numerical measurement that may vary from 0 to 100; generally speaking, higher values indicate improved color rendering abil